Battery Energy+ brand Li-Ion 6 cell for Toshiba Portege M300, S100 series and Qosmio F20, F25 series and Satellite A50, A55, U200, U205 series and Tecra A2, A3X, A9, M2, M2V, M3, M5, M6, M9, S3, S4 series replaces PA3356U-1BAS, PA3356U-1BRL, PA3356U-1BRS, PA3356U-2BAS, PA3356U-2BRS, PA3356U-3BRS, PA3456U-1BRS, PA3588U-1BAS, PA3588U-1BRS. "10.8V 4400mAH Fully Charged and Tested 1 year Warranty"